```plain
unable to locate an Envoy binary
```

This is documented in this [PR](https://github.com/istio/istio/issues/13677). Once the Envoy binary is available for the Mac,
these tests will hopefully succeed.

* If one uses Docker for Mac for the kubernetes environment be sure to specify the `-istio.test.kube.loadbalancer=false` parameter. This solves an error like:

```plain
service ingress is not available yet